Home / 19,008.90-28,513.35-18,879.30

Finding the Fourth Proportional to 19,008.90, 28,513.35 and 18,879.30

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Solution

The fourth proportional to 19,008.90, 28,513.35 and 18,879.30 is: 28,318.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,008.90 : 28,513.35 = 18,879.30 : x
  2. Step 2: Convert to fraction form
    19,008.90/28,513.35 = 18,879.30/x
  3. Step 3: Cross multiply
    19,008.90x = 28,513.35 × 18,879.30
  4. Step 4: Simplify right side
    19,008.90x = 538,312,088.66
  5. Step 5: Solve for x
    x = 538,312,088.66/19,008.90
  6. Step 6: Final answer
    x = 28,318.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.